It does not affect solar energy's availability
Answer:
B
Explanation:
It allowed all other countries into Canada to trade ,hence ,it boots their economy to it's current status
Answer:
Scientists used major changes in life forms in the fossil record to form the geologic time scale.
Answer:
4 billion years
Explanation:
Scientists have found the oldest known rocks on Earth. They are 4.28 billion years old, making them 250 million years more ancient than any previously discovered rocks. Earth formed about 4.6 billion years ago from a disk of gas and dust circling the sun.
